Design and Validation of Microstrip Gap Waveguides and Their Transitions to Rectangular Waveguide, for Millimeter-Wave Applications
Journal article, 2015

The paper describes the design methodology, experimental validation and practical considerations of two millimeterwave wideband vertical transitions from two gap waveguide versions (inverted microstrip gap waveguide, and microstrip packaged by using gap waveguide) to standard WR-15 rectangular waveguide. The experimental results show S11 smaller than -10 dB over relative bandwidths larger than 25% and 26.6% when Rogers RO3003 and RO4003 materials are used respectively. The vertical transition from standard microstrip line packaged by a lid of pins to WR-15, shows measured return loss better than 15 dB over 13.8% relative bandwidth. The new transitions can be used as interfaces between gap waveguide feed-networks for 60 GHz antenna systems, testing equipment (like Vector Network Analyzers) and components with WR-15 ports, such as transmitting/receiving amplifiers. Moreover, the paper documents the losses of different gap waveguide prototypes compared to unpackaged microstrip line and Substrate Integrated Waveguide (SIW). This investigation shows that in V-band the lowest losses are achieved with inverted microstrip gap waveguide.

Perfect Magnetic Conductor (PMC)

microstrip

feed network

dissipation loss

transition

gap waveguide

Artificial Magnetic Conductor (AMC)

millimeterwaves

rectangular waveguide

packaging

Author

Astrid Algaba Brazalez

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Eva Rajo

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

J.-L. Vazquez-Roy

Universidad Carlos III de Madrid

Abbas Vosoogh

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Per-Simon Kildal

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

IEEE Transactions on Microwave Theory and Techniques

0018-9480 (ISSN)

Vol. 63 12 4035-4050 7321835

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TMTT.2015.2495141

More information

Latest update

3/23/2018